Wrench.



L. A. CARNER.

WRENCH.

APPLICATION FILED AUG.I7. I916.

Patented Nov. 7, 1916.

Witnesses ventor a/i, me? In Attorneys TTNTTED @TATES EATENT @FFTQE.

LEONARD A. GARNER, OF MOUNTAIN VIEW, ARKANSAS, ASSIGNOB, 0F ONE-HALF T0 LEWIS E. JOHNSON, 0F MOUNTAIN VIEW, ARKANSAS.

WRENCH.

eoeaee.

Specification of Letters Patent.

Patented Nov. '7, 1916.

Application filed August 17, 1916. Serial No. 115,472.

To all whom it may concern Be it known that I, LEONARD A. GARNER, a citizen of the United States, residing at Mountain View, in the county of Stone and State of Arkansas, have invented a new and useful Wrench, of which the following is a specification.

This invention relates to improvements in wrenches, one of its objects being to provide a simple, light and eiiicient wrench which will operate to tightly grip the object to be turned, the'pressure of the jaws upon the gripped object increasing in proportion to the power applied.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings :-Figure 1 is a side elevation of the wrench showing the jaws moved apart to receive an object therebetween. Fig. 2 is an edge view of the wrench. Fig. 3 is an elevation showing the jaws adjusted toward each other.

Referring to the figures by characters of reference 1 designates the stationary jaw of the wrench, the same being formed integral with and extending at right angles from one end of a shank 2. A pivot pin 3 is extended through the shank at a point between the ends thereof and also extends through the angle portions of bell crank levers 4: arranged at opposite sides respectively of the shank. These bell crank levers are provided with long and short arms, the long arms being connected by links 5 to a stem 6 extending from a handle 7. This stem has a yoke 8 at its free end and said yoke straddles and is pivotally connected to one end of a shank 9, there being a link 10 mounted? on the pivot pin 11 which shank, this link as well as the shank being embraced by the yoke 8. Link 10 is pivotengages said} i.

ally connected at 12 to that end of shank 2 remote from the jaw 1. A movable jaw 13 is provided across that end of the shank 9 which is remote from the pivot pin 11 and shank 9 projects between the short arms of the bell crank levers 4 and is pivotally connected to them by a pin 14.

It will be apparent that when an object is placed between the jaws 1 and 13 the handle 7 can be swung in the direction of the arrow indicated in Fig. 1, whereupon the stem 6 will pull through links 5 upon the long arms of the bell crank levers 1 and at the same time the short arms of said levers will thrust the aw 13 toward the aw 1. shank 9 at this time pulling on the link 10 which works about the pivot pin 12. Thus the jaws 1 and 13 will be brought tightly against opposed faces of the object to be turned and said object will be gripped in proportion to the pressure exerted on the handle 7 in the direction of the arrow in Fig. 1. Consequently there is no danger of the wrench slipping upon the object being turned.

It is to be understood that the wrench can be adjusted if desired by shifting the pin 3 into any one of the series of apertures 15 provided in the shank 2.

What is claimed is 1. A wrench including a shank, a fixed jaw extending at an angle therefrom, a bell crank lever pivotally connected at its angle to said shank, a second shank pivotally connected to one of the arms of the bell crank lever and having a jaw at one end. a link pivotally connecting the other end of said shank to the corresponding end of the first named shank, a handle. a stem extending therefrom and pivotally connected to the second shank at its point of connection with the link, and a link connection between the stem and the other arm of the bell crank lever.

2. A wrench including a shank, a jaw extending at an angle therefrom, a bell crank lever pivotally connected at its angle portion upon said shank, a link: extending from the other end of said shank, a second shank pivotally connected at one end to said link and at its other end to one of the arms of the gbell crank lever, said second shank having a jaw at that end thereof adjacent the bell crank lever, a handle pivotally connected to my own, I have hereto affixed my signature the second shank at its point of connection in the presence of two Witnesses.

with the link and'a link connection between said handle and the other arm of the bell LEONARD GARNER crank lever, said bell crank lever being ad- Witnesses: justably connected to the first named shank. J. J. GREEK, In testimony that I claim the foregoing as MILA'R Sen.

Copies of this patent may be obtained for five cents e'acl i, by addressing the Commissioner of Patents,

' Washington, D. 0. 

